18691998

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{239641}}^1$

素因数の和:239659

約数の個数: 16

約数和(自身を含む): 40259856

約数和(自身を除く): 21567858

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 239641, 479282, 718923, 1437846, 3115333, 6230666, 9345999, 18691998]

約数ペア:

[(1, 18691998), (2, 9345999), (3, 6230666), (6, 3115333), (13, 1437846), (26, 718923), (39, 479282), (78, 239641)]